> I probably never would have noticed anything odd about Addition blend
> mode, except I was working with a channel layer stack from a color image
> where I already knew what the result of adding the layers *should* look
> like. But the highlights were subtly wrong, which is why I asked on the
On 10/13/2015 11:45 PM, Richard wrote:
> Subject: Re: [Gimp-user] Layer addition - bug, feature, or user
misunderstanding?
On an aside, I was able to build the testcase in that GTK bug report and
those results were ... interesting, to say the least: created a black
background layer, t
> Subject: Re: [Gimp-user] Layer addition - bug, feature, or user
> misunderstanding?
> To: strata_ran...@hotmail.com; gimp-user-list@gnome.org
> From: ellest...@ninedegreesbelow.com
> Date: Tue, 13 Oct 2015 11:46:11 -0400
>
> So either GIMP intentionally uses a different a
either do they tell the whole truth.
> Subject: Re: [Gimp-user] Layer addition - bug, feature, or user
> misunderstanding?
> To: strata_ran...@hotmail.com; gimp-user-list@gnome.org
> From: ellest...@ninedegreesbelow.com
> Date: Tue, 13 Oct 2015 11:46:11 -0400
>
> On 10/13/2015
On 10/13/2015 10:55 AM, Elle Stone wrote:
So does this seem like a bug in the Addition blend mode? Or is there
something I'm not still not understanding about how Addition layer blend
mode is supposed to work?
Hmm, Krita produces the results I expected, that is, the three layers
add up to R=G=
On 10/13/2015 12:25 AM, Richard wrote:
The problem is that a layer's opacity doesn't add -- it multiplies, like
this:
Result = (opacity) * (this layer) + (100%-opacity) * (result of layers
below)
This formula holds true regardless of the layer's assigned blending mode
(and it's recursive, with
st@gnome.org
> Date: Mon, 12 Oct 2015 11:22:46 -0400
> Subject: [Gimp-user] Layer addition - bug, feature, or user misunderstanding?
>
> Using GIMP 2.9 updated yesterday, two different ways of adding layers
> produce different results. But it seems to me that the two ways should
&g
Using GIMP 2.9 updated yesterday, two different ways of adding layers
produce different results. But it seems to me that the two ways should
produce the same results. Here is a screenshot:
http://ninedegreesbelow.com/bug-reports/gimp29/layer-addition/addition-results-vary.png,
Are the different
